diff options
| author | Wei Fang <wei.fang@nxp.com> | 2026-03-24 09:21:21 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-27 06:19:06 +0300 |
| commit | f2df9567b123145a07ee4ea7440e233f5d0232cc (patch) | |
| tree | 6e61e88af609da761e77d93cceee900c74120fc8 | |
| parent | 2725d84efe2582c0a4b907e74a689d26b2dbd382 (diff) | |
| download | linux-f2df9567b123145a07ee4ea7440e233f5d0232cc.tar.xz | |
net: enetc: do not access non-existent registers on pseudo MAC
The ENETC4_PM_IEVENT and ENETC4_PM_CMD_CFG registers do not exist on the
ENETC pseudo MAC, so the driver should prevent from accessing them.
Fixes: 5175c1e4adca ("net: enetc: add basic support for the ENETC with pseudo MAC for i.MX94")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Tested-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260324062121.2745033-4-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/freescale/enetc/enetc4_pf.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc4_pf.c b/drivers/net/ethernet/freescale/enetc/enetc4_pf.c index 53cecbb23a97..56899f2254aa 100644 --- a/drivers/net/ethernet/freescale/enetc/enetc4_pf.c +++ b/drivers/net/ethernet/freescale/enetc/enetc4_pf.c @@ -814,6 +814,9 @@ static void enetc4_mac_tx_graceful_stop(struct enetc_pf *pf) val |= POR_TXDIS; enetc_port_wr(hw, ENETC4_POR, val); + if (enetc_is_pseudo_mac(si)) + return; + enetc4_mac_wait_tx_empty(si, 0); if (si->hw_features & ENETC_SI_F_QBU) enetc4_mac_wait_tx_empty(si, 1); @@ -856,6 +859,9 @@ static void enetc4_mac_rx_graceful_stop(struct enetc_pf *pf) struct enetc_si *si = pf->si; u32 val; + if (enetc_is_pseudo_mac(si)) + goto check_rx_busy; + if (si->hw_features & ENETC_SI_F_QBU) { val = enetc_port_rd(hw, ENETC4_PM_CMD_CFG(1)); val &= ~PM_CMD_CFG_RX_EN; @@ -868,6 +874,7 @@ static void enetc4_mac_rx_graceful_stop(struct enetc_pf *pf) enetc_port_wr(hw, ENETC4_PM_CMD_CFG(0), val); enetc4_mac_wait_rx_empty(si, 0); +check_rx_busy: if (read_poll_timeout(enetc_port_rd, val, !(val & PSR_RX_BUSY), 100, 10000, false, hw, |